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en.wikipedia.org/wiki/History_of_the_bicycle

Vehicles for human transport that have two wheels and require balancing by the rider date back ... There are several early but unverified claims for the invention of the bicycle. The earliest comes from a sketch said to be from 1534 and attributed to Gian Giacomo Caprotti, a pupil of Leonardo da Vinci. In 1998 Hans-Erhard ...

www.welovecycling.com/wide/2017/03/17/leonardo-da-vinci-invent-bicycle

Mar 17, 2017 ... In 1974, a sketch of “Leonardo's bike” was presented to the public as a part of the newly restored Da Vinci's Codex Atlanticus. But as with all ...

www.cyclepublishing.com/history/leonardo%20da%20vinci%20bicycle.html

At least one question about the fake Leonardo bicycle remains, namely “who done it ... restoring period of Leonardo da Vinci's Codex Atlanticus popped up in 1974, ... footnote number in the text)] Drais' invention is well-documented with patent ...

www.newscientist.com/article/mg15621044-300-on-yer-bike-leonardo

Oct 18, 1997 ... ALTHOUGH Leonardo da Vinci anticipated many modern developments, he didn' t invent the bicycle. A sketch of a pedal bike found among his ...

www.uh.edu/engines/epi888.htm

Leonardo da Vinci's lost invention of the modern bicycle.

www.ltolman.org/davinci.htm

May 11, 1997 ... More beguiling than the Mona Lisa, at least to me, is the sketch of a bicycle in one of Leonardo da Vinci's notebooks. It probably was drawn ...

beyondthirtynine.com/leonardo-da-vinci-the-inventor-of-the-modern-bike

Feb 15, 2017 ... Leonardo Da Vinci was certainly the first to have sketched a modern looking and working bicycle, which, by the way, it is still the most energy.

www.da-vinci-inventions.com/davinci-inventions.aspx

Though credit for the invention of the first practical parachute usually goes to Sebastien Lenormand in 1783, Leonardo da Vinci actually conceived the parachute ...

www.leonardodavincisinventions.com

The inventions of Leonardo da Vinci. ... His drawing for the Helicopter is said to have inspired Igor Sigorsky to invent the modern Helicopter ... A bicycle company has recently incorporated his design into their machines, their aim is to replace ...